1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2   /*
3      DVB Driver for Philips tda827x / tda827xa Silicon tuners
4 
5      (c) 2005 Hartmut Hackmann
6      (c) 2007 Michael Krufky
7 
8 
9   */
10 
11 #ifndef __DVB_TDA827X_H__
12 #define __DVB_TDA827X_H__
13 
14 #include <linux/i2c.h>
15 #include <media/dvb_frontend.h>
16 #include "tda8290.h"
17 
18 struct tda827x_config
19 {
20 	/* saa7134 - provided callbacks */
21 	int (*init) (struct dvb_frontend *fe);
22 	int (*sleep) (struct dvb_frontend *fe);
23 
24 	/* interface to tda829x driver */
25 	enum tda8290_lna config;
26 	int	     switch_addr;
27 
28 	void (*agcf)(struct dvb_frontend *fe);
29 };
30 
31 
32 /**
33  * tda827x_attach() - Attach a tda827x tuner to the supplied frontend structure
34  *
35  * @fe: Frontend to attach to.
36  * @addr: i2c address of the tuner.
37  * @i2c: i2c adapter to use.
38  * @cfg: optional callback function pointers.
39  * @return FE pointer on success, NULL on failure.
40  */
41 #if IS_REACHABLE(CONFIG_MEDIA_TUNER_TDA827X)
42 extern struct dvb_frontend* tda827x_attach(struct dvb_frontend *fe, int addr,
43 					   struct i2c_adapter *i2c,
44 					   struct tda827x_config *cfg);
45 #else
tda827x_attach(struct dvb_frontend * fe,int addr,struct i2c_adapter * i2c,struct tda827x_config * cfg)46 static inline struct dvb_frontend* tda827x_attach(struct dvb_frontend *fe,
47 						  int addr,
48 						  struct i2c_adapter *i2c,
49 						  struct tda827x_config *cfg)
50 {
51 	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
52 	return NULL;
53 }
54 #endif // CONFIG_MEDIA_TUNER_TDA827X
55 
56 #endif // __DVB_TDA827X_H__
57